Robert t



R. T. WILLIAMS.

CARBURETER.

APPLlcATIoN FILED MAR. 8, i915.

l l 95,3 l 5 Patented Aug. 22, 1916.

ROBERT T. WILLIAMS, OF DETROIT, MICHIGANLASSIGNOB TO R. T. W. AUTO ACCESSORY CO., F DETROIT, MICHIGAN, A CORPORATION OF MICHIGAN.

CARBURETER.

To all whom t may concern.:

Be it known that I, ROBERT T. WILLIAMS, citizen of the United States, residing at Detroit, county of Wayne, State of Michigan,

have invented a certain new and useful Improvement in Carbureters, and declare the following to be a full, clear, and exact description of the same, such as will enable others skilled in the art to which it pertains to make and use the same, reference being had to the accompanying drawings, which form a part of this specification.

My invention relates to carbureters as shown in the accompanying drawings and more particularly described in the following specification and claims.

One of the objects of my invention is to provide a device simple in its construction and operation in which the air is drawn 2G porization thereby thoroughly charging the air, before delivery as a dry gas to the combustion chamber of an internal combustion engine.

One feature of construction consists in providing a perforated coil located adjacent to the bottom of the fuel chamber and connected with the air inlet ort ;-the altitude of the fuel being governe by a valve under 30 the control of a float housed in a connecting chamber.

Another feature-of the invention consists in the means provided to control the ratio of carbureted air drawn through the liquid fuel, with the volume of pure air delivered to the mixing chamber, that any desired mixture may be transmitted to the combustion chamber of the engine.

Another feature of the invention consists in providing a suitable graduated dial transversed by a swinging arm in turn keyed or otherwise connected with the stem of the valve controlling the passage of air directly delivered to the mixing chamber, and indirectly the air delivered through the liquid fuel ;-that the valve may be properly adjusted to provide any predetermined mixture required.

' Y Other advantages and improvements will hereafter appear.

In the drawing accompanying this specificatiom-Figure 1, is a central vertical sectional view of the carbureter. Fig. 2, is a plan view of the same. Fig. 3, is a horizontal sectional view on line 3 3 of Fig. 1,

Specification of Letters Patent.

' Application iled March 8, 1915.

through a volume of liquid fuel causing va- Patented Aug. 22, 1916.

Serial No. 12,715.

with the float chamber broken away. Fig. 4, is a fragmentary detail in section of the air controlling valve provided with an operating lever and a connecting rod that the valve may be adjusted from a distant point, as for example, the dash-board of an auto-` mobile.

Referring now to the letters of reference placed upon the drawings A, denotes the carbureting chamber of the carbureter. B, a float chamber connected with the carbureting chamber through the connecting port b.

C, is a valve provided with a float C, to control the admission and altitude of fuel in the fuel chamber.

B, is a nipple integral with the float chamber having a screw threaded end to receive a pipe connection (not shown) leading to a source of liquid fuel supply.

D, is a closure cap for the fuel chamber formed with a transverse air passage D, open at one end for the admission of air and provided at its opposite end with a projecting fiange D2, having holes to receive bolts to co-nnect it with a manifold (not shown) of an internal combustion engine.

D3, is the usual butterfly valve provided with an operating lever D4 controlling the volume of gas delivered to the combustion chamber. N

E, denotes a coil located adjacent to the bottom of the fuel chamber provided with an upstanding portion E, having a screw threaded engagement with a nipple projecting from the closure cap D, connecting with an auxiliary air passage E2, located within the transverse air passage D. The coil E, is provided on its underside with a plurality of perforations e through which the air passing into the coil is drawn up through the fuel by the suction stroke of the engine as indicated by the arrows.

F, is a port connecting the fuel chamber with the transverse air passage D.

G, indicates an annular wall dividing the transverse air passage D', provided with a port g, controlled by a rotatable valve Il, having a transverse port adapted to register with the ports in the annular wall.

H', is the valve stem and H2, a suitable head by which the valve may be manually adjusted.

3, is a cap engaged with the annular rim of the transverse air passage encircling the valve.

I, is a swinging arm carried by the valve stem, and I are a series of graduations formed on the cap H3, which in conjunction with the swinging arm serve to indicate the degree to which the ports are opened through the valve H.

J, is a draw-off cock to drain the fuel chamber.

In the modification shown in Fig. 4, the valve stem H is provided with an arm Ha actuated by a rod Hb which may in turn be operated` by any suitable controlling means (not shown).

Having indicated the several parts by reference letters the construction and operation p of the device will be readily understood The device being properly installed, fuel is admitted to the fuel chamber, the altitude of which is controlled by the iioat valve Upon the engine operating under its suction stroke it will be obvious that air drawn in through the air passage D', will enter the coil E;-pass from thence out through the perforations e, up through the volume of liquid fuel absorbing a portion of the latter and as a dry gas, passing out through the port F, into the mixing chamber and thence to the combustion space of the engine. The volume of gas delivered being under control `of the usual butterfly valve D3. In order that a mixture of any required richness may be delivered to the combustion chamber of the engine, the rotatable valve H, is adjusted so that more or less of the air entering the transverse passage may pass directly through the valve into the mixing chamber, where it will co-mingle with the dry gas delivered through the port F, from the fuel chamber, the desired ratio being obtained by are an adjustment of the swinging arm I, with reference to the graduated dial I.

It is obvious that in place of the perforated helical coil ;-depending pipes connected with a manifold and provided with perforations below the body of the liquid fuel, or other device of a like character may be employed without departing from the spirit of my invention. It is further obvious that in place of the float valve shown to control the altitude of the liquid fuel above the perforated coil, any other suitable automatically controlled valve may be employed.

Having thus described my invention what I claim is A carbureter including a casing having a fuel chamber, a removable cover for said chamber, a pipe integral with said cover, a

.valve in said pipe, means connected to the valve for indicating the degree of opening thereof, a coil in the chamber provided with perforations and located below the level of the liquid in the chamber, means for directing a quantity of air through said coil out through the perforations therein, up through. the liquid in the fuel chamber and into the outlet end of said pipe, means for directing a quantity of air directly through said pipe and through the said valve there commingling with the air discharged through the coil, and means for operating the aforesaid valve to regulate the quantity of air passed therethrough.

In testimony whereof I sign this specification in the presence of two witnesses.

ROBERT T. WILLIAMS. Witnesses:

SAMUEL E. THOMAS, LENA WmGAND. 

